CN106584769A - Precise glue-injecting nozzle - Google Patents
Precise glue-injecting nozzle Download PDFInfo
- Publication number
- CN106584769A CN106584769A CN201610958237.XA CN201610958237A CN106584769A CN 106584769 A CN106584769 A CN 106584769A CN 201610958237 A CN201610958237 A CN 201610958237A CN 106584769 A CN106584769 A CN 106584769A
- Authority
- CN
- China
- Prior art keywords
- needle
- nozzle
- injecting glue
- regulating part
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/20—Injection nozzles
- B29C45/23—Feed stopping equipment
- B29C45/231—Needle valve systems therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/74—Heating or cooling of the injection unit
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a precise glue-injecting nozzle, belonging to the technical field of precise injection molding of products. The precise glue-injecting nozzle comprises a nozzle, a glue-injecting mechanism connecting block, a valve needle and a valve needle driving mechanism, wherein an inner nozzle cavity is arranged in the nozzle; a nozzle hole is formed in the front end of the nozzle; the glue-injecting mechanism connecting block is provided with a raw material inlet; a channel allowing the inner nozzle cavity to be communicated with the raw material inlet is arranged in the valve needle; the front end of the valve needle is provided with a tip; and the valve needle driving mechanism can drive the valve needle to carry out reciprocating motion and to open or close the nozzle hole via the tip. Since the precise glue-injecting nozzle employs the valve needle with a hollow structure, a raw material can enter the inner nozzle cavity through the channel in the valve needle, and the raw material in the inner nozzle cavity is always communicated with the raw material in the raw material inlet, so the raw material in the inner nozzle cavity is always in a full state and is not changed in volume in a closing mode; thus, the precision of a glue injection amount is guaranteed, errors in output glue amounts are reduced, and the purpose of ultra-precise injection is achieved.
Description
Technical field
The present invention is used for product precise injection molding technical field, more particularly to a kind of accurate injecting glue nozzle.
Background technology
The nozzle hole of injecting glue nozzle is mostly closed using needle in injecting glue gap in prior art, i.e., needle is by nozzle hole
Nozzle hole is opened during extraction, in needle insertion nozzle hole after nozzle bore closure, above-mentioned needle during opening and closing, due to
The reason for reason of needle turnover produces step increase or reduces, can cause sizing material that Volume Changes occur affects injecting glue control essence
Degree, and, the unlatching distance of needle is fixed in prior art, it is impossible to adjusts, is not suitable for precise injection molding.
The content of the invention
To solve the above problems, the present invention provides a kind of accurate injecting glue nozzle, and it can reduce the error of defeated gel quantity, reach
The purpose of ultraprecise injection.
The technical solution adopted for the present invention to solve the technical problems is：A kind of accurate injecting glue nozzle, including nozzle, injecting glue
Mechanism's contiguous block, needle and needle drive mechanism, are provided with nozzle inner chamber inside the nozzle, nozzle front end is provided with nozzle hole,
The gum-filling mechanism contiguous block is provided with feed(raw material)inlet, and the passage of conducting nozzle inner chamber and feed(raw material)inlet, valve are provided with inside needle
The front end of pin is provided with tip, and needle drive mechanism can drive the needle to move back and forth and open or close institute by the tip
State nozzle hole.
The improvement of technical solution of the present invention is further used as, the needle includes syringe needle and needle body, and syringe needle is located at needle body
Front end, the sectional dimension of the syringe needle is less than the sectional dimension of needle body, and syringe needle forms shoulder, pin with the connection intermediate location of needle body
In vivo the passage in portion forms some vias in shoulder.
The improvement of technical solution of the present invention is further used as, the needle drive mechanism includes being located at nozzle and gum-filling mechanism
Injecting glue air valve body between contiguous block, is provided with plunger shaft in the injecting glue air valve body, the needle body of needle passes through the plunger shaft, needle body
On be provided with piston in plunger shaft, plunger shaft both sides before and after piston form ante-chamber and back cavity, injecting glue air valve body be provided with
The injecting glue air valve open hole of ante-chamber conducting and the injecting glue air valve closing hole with back cavity conducting.
The improvement of technical solution of the present invention is further used as, also including needle stroke governor motion, the needle stroke is adjusted
Before and after section mechanism includes the first regulating part being sleeved on piston rear side needle body and can drive the first regulating part in the plunger shaft
Mobile drive mechanism.
The improvement of technical solution of the present invention is further used as, the drive mechanism includes being located at injecting glue air valve body and glue-injection machine
Regulating part mounting blocks between structure contiguous block, the second regulating part being located on regulating part mounting blocks and the second regulating part can be driven to hang down
The straight set screw in the motion of needle body direction, first regulating part and the second regulating part are coordinated using inclined end face.
The improvement of technical solution of the present invention is further used as, the inclined end face of first regulating part is provided with T-shaped guide groove,
The inclined end face of the second regulating part is provided with the T-shaped guide block being inlaid in T-shaped guide groove.
The improvement of technical solution of the present invention is further used as, the nozzle outside is provided with cooling jacket, inside cooling jacket
With the water cavity for wrapping nozzle, the external cooling-water duct of water cavity.
The improvement of technical solution of the present invention is further used as, nozzle rear end is provided with flange connecting seat, and cooling jacket passes through spiral shell
Nail is securedly mounted on flange connecting seat, and the conical surface for cooperating is formed between nozzle and cooling jacket.
The improvement of technical solution of the present invention is further used as, check valve is provided with feed(raw material)inlet.
Beneficial effects of the present invention：The present invention is using the needle with hollow structure, and what raw material can be inside needle is logical
Road enters nozzle inner chamber, and the raw material in nozzle inner chamber communicates always with the raw material of feed(raw material)inlet, so no matter needle be unlatching or
Close, the raw material in nozzle inner chamber is all full material state, and raw material will not produce Volume Changes during closing, so as to ensure injecting glue amount
Accuracy, reduces the error of defeated gel quantity, reaches the purpose of ultraprecise injection.
Description of the drawings
Below in conjunction with the accompanying drawings the invention will be further described：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the first regulating part of the invention and the second regulating part inclined-plane fit structure schematic diagram；
Fig. 3 is the T-shaped guide block fit structure schematic diagram of the T-shaped guide groove of the first regulating part of the invention and the second regulating part.
Specific embodiment
Referring to figs. 1 to Fig. 3, the concrete structure of the preferred embodiments of the invention is that show.Will be detailed below this
Invent the design feature of each element, and be with shown in Fig. 1 if being described to during direction (upper and lower, left and right, before and after)
Structure is to be not limited thereto with reference to description, but the actually used direction of the present invention.
The invention provides a kind of accurate injecting glue nozzle, referring to Fig. 1, including nozzle 1, gum-filling mechanism contiguous block 2, needle 3
And needle drive mechanism, nozzle 1 is located at front end, and gum-filling mechanism contiguous block 2 is located at rear end, for by nozzle 1 and gum-filling mechanism
It is connected, wherein gum-filling mechanism is including gun barrel etc..Nozzle inner chamber 11 is provided with inside the nozzle 1, the front end of nozzle 1 is provided with nozzle hole
12, the gum-filling mechanism contiguous block 2 is provided with feed(raw material)inlet 21, and at feed(raw material)inlet 21 check valve is provided with so that raw material can only be defeated
Enter to be unable to reflux.The needle 3 includes syringe needle 31 and needle body 32, and syringe needle 31 is located at the front end of needle body 32, is provided with inside needle body 32
Conducting nozzle inner chamber 11 and the passage 33 of feed(raw material)inlet 21, the front end of syringe needle 31 is provided with tip, and needle drive mechanism can drive institute
State needle 3 to move back and forth and open or close the nozzle hole 12 by the tip.
The structure and detailed action of the present invention is as follows：
1. raw material is input into by outside feeding system from feed(raw material)inlet 21.
2. raw material enters nozzle inner chamber 11 by the inner passage 33 of needle 3, and nozzle inner chamber 11 is filled up into sizing material.
3. nozzle inner chamber 11 is filled up after raw material, connected gum-filling mechanism（Gun barrel）Perform injecting glue action, external thrust
Promote silica-gel injection gun barrel piston rod to advance to inject the sizing material in nozzle inner chamber 11 to come, at the same time, needle drive mechanism is promoted
Needle 3 is retreated, and nozzle hole 12 is opened, and sizing material is expelled in mould through nozzle hole 12.Gun barrel completely injects sizing material after coming
Injecting glue action is completed, needle drive mechanism continues to cause to promote needle 3 to advance, and nozzle hole 12 is closed.
4. accurate injecting glue action is completed.
Wherein, according to the function of each several part of needle 3, the sectional dimension of the syringe needle 31 is less than the sectional dimension of needle body 32,
Syringe needle 31 forms shoulder with the connection intermediate location of needle body 32, and the passage 33 inside needle body forms some vias 34 in shoulder, former
Material can be flowed freely through passage 33 and via 34 in 3 action of needle between nozzle inner chamber 11 and feed(raw material)inlet 21.
Used as the preferred embodiment of the present invention, the needle drive mechanism includes being located at nozzle 1 and gum-filling mechanism connection
Plunger shaft 42 is provided with injecting glue air valve body 41 between block 2, the injecting glue air valve body 41, the needle body 32 of needle 3 passes through the piston
Chamber 42, piston 43 is provided with the plunger shaft 42 on needle body 32, the both sides before and after piston 43 of plunger shaft 42 form ante-chamber and back cavity,
Injecting glue air valve body 41 is provided with the injecting glue air valve open hole 44 with ante-chamber conducting and closes hole 45 with the injecting glue air valve of back cavity conducting,
Air pressure is entered into inside ante-chamber by injecting glue air valve open hole 44, promotes needle 3 to retreat, and nozzle hole 12 is opened；Air pressure is by injecting glue gas
Valve is closed hole 45 and is entered inside back cavity so that needle 3 advances, and nozzle hole 12 is closed.
It is fixed for the unlatching distance of needle in prior art 3, it is impossible to adjust, is not suitable for asking for precise injection molding
Topic, when micro-precision product injection moulding is performed, the response time of the bigger needle of distance that needle 3 is opened is about big, and due to
The error of the glue amount that the movement of needle 3 is caused is also bigger, referring to Fig. 2, Fig. 3, present invention additionally comprises needle stroke governor motion, institute
Stating needle stroke governor motion includes the first regulating part 51 being sleeved on the rear side needle body 32 of piston 43 and can drive the first tune
The drive mechanism that section part 51 is moved forward and backward in plunger shaft 42.The drive mechanism includes being located at injecting glue air valve body 41 and glue-injection machine
Regulating part mounting blocks 52 between structure contiguous block 2, the second regulating part 53 being located on regulating part mounting blocks 52 and can drive second
The set screw 54 that regulating part 53 is moved perpendicular to the direction of needle body 32, the regulating part 53 of set screw 54 and second is matched somebody with somebody using screw thread
Close, the regulating part 53 of first regulating part 51 and second is coordinated using inclined end face.Second is driven by twisting set screw 54
Moving left and right for first regulating part of mobile drive 51 of regulating part 53 changes the distance between the second regulating part 53 and piston 43, from
And realize that needle 3 is opened apart from adjustable control, make injecting glue control more accurate.
In order to ensure the compactedness that the first regulating part 51 and the inclined end face of the second regulating part 53 coordinate, first regulating part
51 inclined end face is provided with T-shaped guide groove, and the inclined end face of the second regulating part 53 is provided with the T-shaped being inlaid in T-shaped guide groove and leads
Block 55.When second regulating part 53 is moved up and down, T-shaped guide block 55 and T-shaped guide groove cooperate, and drive the first regulating part 51 in needle
Move forward and backward on 3.
In order to prevent raw material in nozzle hole 12 by thermocoagulation, this nozzle 1 devises cooling structure, i.e., the described outside of nozzle 1
Cooling jacket 6 is provided with, the inside of cooling jacket 6 has the water cavity for wrapping nozzle 1, the external cooling-water duct 61 of water cavity, cooling water
Entered inside cooling jacket 6, by the temperature of the cycle down grazing shot mouth 1 of cooling water by cooling duct 61.Preferably, nozzle 1
Rear end is provided with flange connecting seat 13, and cooling jacket 6 is securedly mounted on flange connecting seat 13 by screw, nozzle 1 and cooling water
The conical surface for cooperating is formed between set 6, it is ensured that coordinate alignment and compactness.
Certainly, the invention is not limited to above-mentioned embodiment, and those of ordinary skill in the art are without prejudice to this
Equivalent variations or replacement can be also made on the premise of spirit, the modification of these equivalents or replacement are all contained in the application right
Require in limited range.
Claims (9)
1. a kind of accurate injecting glue nozzle, it is characterised in that：Including nozzle, gum-filling mechanism contiguous block, needle and needle driving machine
Structure, is provided with nozzle inner chamber inside the nozzle, nozzle front end is provided with nozzle hole, and the gum-filling mechanism contiguous block is provided with raw material and enters
Mouthful, the passage of conducting nozzle inner chamber and feed(raw material)inlet is provided with inside needle, the front end of needle is provided with tip, and needle drive mechanism can
Drive the needle to move back and forth and the nozzle hole is opened or closed by the tip.
2. accurate injecting glue nozzle according to claim 1, it is characterised in that：The needle includes syringe needle and needle body, syringe needle
Positioned at the front end of needle body, the sectional dimension of the syringe needle is less than the connection intermediate location of the sectional dimension of needle body, syringe needle and needle body
Shoulder is formed, the passage inside needle body forms some vias in shoulder.
3. accurate injecting glue nozzle according to claim 2, it is characterised in that：The needle drive mechanism includes being located at nozzle
And the injecting glue air valve body between gum-filling mechanism contiguous block, it is provided with plunger shaft in the injecting glue air valve body, the needle body of needle is through described
Plunger shaft, piston is provided with needle body in plunger shaft, and plunger shaft both sides before and after piston form ante-chamber and back cavity, injecting glue air valve
Body is provided with the injecting glue air valve open hole with ante-chamber conducting and closes hole with the injecting glue air valve of back cavity conducting.
4. accurate injecting glue nozzle according to claim 3, it is characterised in that：Also include needle stroke governor motion, it is described
Needle stroke governor motion includes the first regulating part being sleeved on piston rear side needle body and the first regulating part can be driven to live
The drive mechanism moved forward and backward in plug chamber.
5. accurate injecting glue nozzle according to claim 4, it is characterised in that：The drive mechanism includes being located at injecting glue air valve
Regulating part mounting blocks between body and gum-filling mechanism contiguous block, the second regulating part being located on regulating part mounting blocks and can drive
The set screw that two regulating parts are moved perpendicular to needle body direction, first regulating part and the second regulating part are matched somebody with somebody using inclined end face
Close.
6. accurate injecting glue nozzle according to claim 5, it is characterised in that：Set on the inclined end face of first regulating part
There is T-shaped guide groove, the inclined end face of the second regulating part is provided with the T-shaped guide block being inlaid in T-shaped guide groove.
7. accurate injecting glue nozzle according to claim 1, it is characterised in that：The nozzle outside is provided with cooling jacket, cold
But water jacket inside has the water cavity for wrapping nozzle, the external cooling-water duct of water cavity.
8. accurate injecting glue nozzle according to claim 7, it is characterised in that：Nozzle rear end is provided with flange connecting seat, cooling
Water jacket is securedly mounted on flange connecting seat by screw, and the conical surface for cooperating is formed between nozzle and cooling jacket.
9. accurate injecting glue nozzle according to claim 1, it is characterised in that：Check valve is provided with feed(raw material)inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958237.XA CN106584769B (en) | 2016-11-03 | 2016-11-03 | A kind of precision injecting glue nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958237.XA CN106584769B (en) | 2016-11-03 | 2016-11-03 | A kind of precision injecting glue nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106584769A true CN106584769A (en) | 2017-04-26 |
| CN106584769B CN106584769B (en) | 2019-10-11 |
Family
ID=58590393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610958237.XA Active CN106584769B (en) | 2016-11-03 | 2016-11-03 | A kind of precision injecting glue nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106584769B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228148A (en) * | 2018-10-22 | 2019-01-18 | 宁波威瑞精密机械有限公司 | The pneumatic nozzle of rapid intercepting liquid |
| CN109937129A (en) * | 2017-10-17 | 2019-06-25 | 法拉奥蒂工业塑料股份责任有限公司 | For injection molding syringe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5151278A (en) * | 1991-04-09 | 1992-09-29 | Nitrojection Corporation | Plastic injection molding nozzle with gas assist |
| CN202016165U (en) * | 2011-04-12 | 2011-10-26 | 上虞市思纳克热流道有限公司 | Regulation structure for valve needle in oil cylinder |
| CN104549901A (en) * | 2015-02-04 | 2015-04-29 | 常熟康尼格科技有限公司 | Special built-in glue injection gun for low-pressure glue injection |
| CN204431635U (en) * | 2015-02-15 | 2015-07-01 | 青岛农业大学 | A kind of Novel injection molding machine nozzle |
| KR20160057697A (en) * | 2014-11-14 | 2016-05-24 | 김혁중 | Manufacturing method of frp core |
| CN205364403U (en) * | 2016-01-27 | 2016-07-06 | 上海缔翊模具有限公司 | Multiple material mixture moulds plastics firstly and multiple material mixture injection moulding mould |
| CN206170521U (en) * | 2016-11-03 | 2017-05-17 | 广州天沅硅胶机械科技有限公司 | Mouth is penetrated to injecting glue |
-
2016
- 2016-11-03 CN CN201610958237.XA patent/CN106584769B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5151278A (en) * | 1991-04-09 | 1992-09-29 | Nitrojection Corporation | Plastic injection molding nozzle with gas assist |
| CN202016165U (en) * | 2011-04-12 | 2011-10-26 | 上虞市思纳克热流道有限公司 | Regulation structure for valve needle in oil cylinder |
| KR20160057697A (en) * | 2014-11-14 | 2016-05-24 | 김혁중 | Manufacturing method of frp core |
| CN104549901A (en) * | 2015-02-04 | 2015-04-29 | 常熟康尼格科技有限公司 | Special built-in glue injection gun for low-pressure glue injection |
| CN204431635U (en) * | 2015-02-15 | 2015-07-01 | 青岛农业大学 | A kind of Novel injection molding machine nozzle |
| CN205364403U (en) * | 2016-01-27 | 2016-07-06 | 上海缔翊模具有限公司 | Multiple material mixture moulds plastics firstly and multiple material mixture injection moulding mould |
| CN206170521U (en) * | 2016-11-03 | 2017-05-17 | 广州天沅硅胶机械科技有限公司 | Mouth is penetrated to injecting glue |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109937129A (en) * | 2017-10-17 | 2019-06-25 | 法拉奥蒂工业塑料股份责任有限公司 | For injection molding syringe |
| CN109937129B (en) * | 2017-10-17 | 2021-05-04 | 法拉奥蒂工业塑料股份责任有限公司 | Injector for injection molding |
| CN109228148A (en) * | 2018-10-22 | 2019-01-18 | 宁波威瑞精密机械有限公司 | The pneumatic nozzle of rapid intercepting liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106584769B (en) | 2019-10-11 |
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